LM4040D41IDBZTG4

Overview

The LM4040D41IDBZTG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096V with an initial accuracy of 1% and a temperature coefficient of 150 ppm/°C. The device operates within a cathode current range from a minimum of 75 μA to a maximum of 15 mA. It is characterized for operation over an extended ambient temperature range of -40°C to +125°C. The component is housed in a space-saving SOT-23-3 surface-mount package.

Feature Summary

• Provides stable reference voltage without requiring external output capacitors due to stability with all capacitive loads.
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to achieve specified tolerance grades.
• Features low dynamic impedance and low noise characteristics to maintain performance across varying operating currents.

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters

Procurement Notes

Verify the specific ordering suffix 'G4' against the latest manufacturer documentation to confirm compliance status and availability, as product lifecycles may change. Confirm that the D-grade specification aligns with the required 1% accuracy and 150 ppm/°C temperature coefficient for the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when a 4.096V reference with 1% initial accuracy is sufficient for the design requirements. The D-grade classification indicates a 150 ppm/°C temperature coefficient, which differs from the tighter 100 ppm/°C found in A, B, and C grades. Ensure the application can accommodate the extended temperature range capability up to 125°C if environmental conditions require it.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The series offers various fixed output voltages including 2.048V, 2.5V, 3V, 5V, 8.192V, and 10V. The 'D' designation identifies the grade with 1% tolerance, while '41' specifies the 4.096V output voltage. The 'I' suffix typically denotes industrial temperature range, but the datasheet confirms this specific variant supports the extended -40°C to 125°C range.

Replacement Considerations

LM4040D41IDBZR